Are you looking for a backpacking bag? Like one you can fit and carry in a backpack? Options are pretty limited in that price range, but you could definitely find a camping bag for that price:

https://www.amazon.com/Sports-Celsius-Sleeping-Compression-Included/dp/B00DDP386C (temps are definitely 'survival' temps and not comfort temps, super bulky, but perfect for car camping)

Probably about as close as you'll get to a decent backpacking bag at that price:

https://www.amazon.com/Kelty-Cosmic-Sleeping-Paradise-Twilight/dp/B014JQA4YM